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Delayed coking device and method

A delayed coking method and delayed coking technology, applied in the field of delayed coking devices, can solve problems such as low yield of liquid products and poor quality of coking products, and achieve avoidance of secondary cracking and coke condensation reactions, improved distribution, and improved The effect of light oil yield

Inactive Publication Date: 2019-01-04
SINOPEC LUOYANG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in the existing delayed coking process. The yield of liquid products is not high, and the quality of coking products is not good. How to improve the delayed coking process, optimize its operating conditions, and increase the yield of liquid products while increasing production capacity is the problem that needs to be solved now

Method used

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  • Delayed coking device and method
  • Delayed coking device and method
  • Delayed coking device and method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0037] Please refer to the attached figure 1, this embodiment provides a delayed coking unit 10, which includes a first oil and gas delivery pipe, a second oil and gas delivery pipe, a first liquid delivery pipe, a coupling tower 200, a third oil and gas delivery pipe, a fourth oil and gas delivery pipe, coke Tower 300, fractionation tower 400, air extraction equipment 440, air cooler 410, cooler 420, oil-gas separation tank 430, heating furnace 100, and coking circulating oil delivery pipe.

[0038] In the embodiment of the present invention, the coupling tower 200 is introduced into the delayed coking unit 10, so that most of the oil and gas produced by heating the coking raw materials in the heating furnace 100 directly enter the fractionation tower 400, which can avoid or reduce the residence time of the high-temperature oil and gas in the coke tower 300 to the greatest extent. , to avoid the secondary cracking and coke condensation reaction of this part of high-temperatur...

no. 2 example

[0052] This embodiment provides a delayed coking method, which includes the following steps:

[0053] heating furnace

[0054] The coking raw material and the coking circulating oil produced in the fractionation tower are sent to the heating furnace for heating to 495°C, and then the heated high-temperature oil and gas are sent to the coupling tower through the first oil and gas delivery pipe.

[0055] coupling tower

[0056] The coupling tower quickly separates the received high-temperature gas into a gas phase and a liquid phase. The gas phase is transported to the fractionation tower through the second oil and gas delivery pipe for fractionation, and the liquid phase stays in the coupling tower and flows down along the wall of the coupling tower. The coking reaction is carried out continuously during the process, the temperature is Celsius, the pressure is 0.13Mpa, the gas generated by cracking is sent to the fractionation tower, and the liquid phase after a period of reac...

no. 3 example

[0063] This embodiment provides a delayed coking method, which is roughly the same as the method provided in the second embodiment, the difference lies in the different parameters, and the differences are as follows:

[0064] The temperature of the heating furnace is 498 degrees Celsius, the temperature of the coupling tower is 493 degrees Celsius, the pressure of the coupling tower is 0.12Mpa, and the pressure of the coke tower is 0.11Mpa.

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Abstract

The invention discloses a delayed coking device and method, and relates to the technical field of petrochemical engineering. The device comprises a coupling tower used for performing cracking and gas-liquid separation on high-temperature oil gas conveyed by a heating furnace. The coupling tower is introduced into the delayed coking device, so that most oil gas produced when the heating furnace heats coking raw materials directly enters a fractionating tower, the retention time of the high-temperature oil gas in a coke tower can be avoided or shortened to the greatest extent, secondary pyrolysis of the high-temperature oil gas and green coke condensation reaction are prevented, the oil gas does not pass through a coke layer and a foam layer in the coke tower, that is, the oil gas does not participate in the coke generation based on cracking or condensation, distribution of coking products is reasonably and effectively improved, and light oil yield of the delayed coking device is increased.

Description

technical field [0001] The invention relates to the field of petrochemical technology, in particular to a delayed coking device and a method thereof. Background technique [0002] With the increasing trend of heavy and inferior crude oil resources around the world, how to convert heavy oil into light oil with low investment and low operating cost has become an urgent problem to be solved. [0003] At present, the processing of heavy crude oil and residual oil in the world is still dominated by decarburization process and delayed coking process. The delayed coking process has the advantages of strong raw material adaptability and simple process flow, and has become one of the important means for deep processing of heavy oil. . However, there are still some problems in the existing delayed coking process. The yield of liquid products is not high, and the quality of coking products is not good. How to improve the delayed coking process, optimize its operating conditions, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/04
CPCC10G55/04
Inventor 王宝石黄新龙刘丹禾李康雷杰刘淑芳王少锋
Owner SINOPEC LUOYANG TECH CO LTD